4iiii Precision Dual Sided Review

A Deep Dive Into ​4iiii Precision Dual Sided

​The 4iiii Precision power meter has been reviewed by Tristan Haskins for Power-Pedals.com. This is the dual sided power meter from 4iiii with strain gauges hidden away in both LEFT and RIGHT crank arms. Having two isolated power meters means the 4iiii Precision Dual accurately measures left and a right power balance with true bi-lateral accuracy. It also provides a genuine total power output (not simply doubling power from one side).

Read Related Article: Powertap P1 Pedals Review


Pros & Cons


​More details to follow very soon …

Method of Installation

​More details to follow very soon …

Tools Required to fit this Power Meter

  • More details to follow very soon…

Alternative Power Meters

​Other power meters offering bi-lateral power metering of the left and right legs are the pedal-based systems from Powertap and Garmin and the combination crankset from Rotors, the 2INPower. The 2INPower has a strain gauge in the left crank arm and the other independent sensor in the bottom bracket axle.

Technical Specification

  • 3D power meter technology (patent pending) measures tri-axial strain on your crank
  • Accurate, consistent data
  • Lightweight, compact design
  • Battery status indicator via 4iiii app
  • Compatible with ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products
  • User-friendly app and configurable rider compensation scale factor
  • Easy setup and maintenance
  • Over-the-air upgrade capability for adding new features and updates
  • Specifications
  • Weight: 25 grams (power meter only)
  • Data accuracy: +/- 1% error margin
  • Battery life: 100+ hours on 2032 coin cell battery
  • Battery status indicator: Alert at 15% battery power

External Videos

coming soon ….

External Resources

The purpose of Power-Pedals.com product presentations is to give the visitor a summary overview of each power meter. They are NOT intended as an in-depth technical review, more a summary providing essential top-level features, functions, pros, and cons. Further information can be found at these links to other external reference sites.

Product Summary

Ridden by the pros, this is the top specification PRECISION PRO dual-side power meter. The Precision PRO dual has all the benefits of the 4iiii Precision crank arm model, eg. superb accuracy, superlight, ANT+ & Bluetooth data broadcast and 4iiii 3D power meter technology. On top of all that is provides a bi-lateral assessment of power balance across the left and right wattage. Perfect for those who need specific power output from each crank side, or anyone who simply wants the best power meter on the market.

The PRECISION PRO Ride Ready comes pre-installed on a new Shimano DURA-ACE FC-9000 series crankset you purchase from us.

Read Other Review: Rotor 2INPower System Review

Andrew Wyatt

Andrew Wyatt

Andrew Wyatt has been a tech geek for as long as he can remember. Whether it's laptops, cameras, or projects, he's obsessed with it all. When he's not researching the latest tech products, he likes to go on long hikes with his dogs.

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